'abadengo' originates from Medieval Spanish, specifically the word 'abadengo', where 'abad' meant 'abbot' and '-engo' denoted possession or belonging.

'abadengo' changed from the Medieval Spanish word 'abadengo' and has remained largely unchanged in modern usage.

Initially, it meant 'lands belonging to an abbey', and this meaning has largely remained the same in modern usage.